storage: logical: drop useless if
storage: logical: drop useless if

virStorageBackendLogicalCreateVol contains a piece like:

    if (vol->target.path != NULL) {
        /* A target path passed to CreateVol has no meaning */
        VIR_FREE(vol->target.path);
    }

The 'if' is useless here, but 'syntax-check' doesn't catch that
because of the comment, so drop the 'if'.

datto/libvirt,datto/libvirt,VenkatDatta/libvirt,andreabolognani/libvirt,rlaager/libvirt,nertpinx/libvirt,zippy2/libvirt,jardasgit/libvirt,shugaoye/libvirt,zippy2/libvirt,elmarco/libvirt,datto/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,zippy2/libvirt,agx/libvirt,crobinso/libvirt,eskultety/libvirt,elmarco/libvirt,VenkatDatta/libvirt,eskultety/libvirt,nertpinx/libvirt,eskultety/libvirt,crobinso/libvirt,fabianfreyer/libvirt,datto/libvirt,olafhering/libvirt,eskultety/libvirt,andreabolognani/libvirt,shugaoye/libvirt,taget/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,fabianfreyer/libvirt,shugaoye/libvirt,agx/libvirt,taget/libvirt,nertpinx/libvirt,jardasgit/libvirt,datto/libvirt,olafhering/libvirt,elmarco/libvirt,olafhering/libvirt,elmarco/libvirt,agx/libvirt,rlaager/libvirt,rlaager/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,jardasgit/libvirt,taget/libvirt,shugaoye/libvirt,crobinso/libvirt,libvirt/libvirt,zippy2/libvirt,nertpinx/libvirt,jfehlig/libvirt,libvirt/libvirt,andreabolognani/libvirt,taget/libvirt,rlaager/libvirt,VenkatDatta/libvirt,eskultety/libvirt,jardasgit/libvirt,libvirt/libvirt,libvirt/libvirt,agx/libvirt,rlaager/libvirt,andreabolognani/libvirt,crobinso/libvirt,jfehlig/libvirt,jfehlig/libvirt,olafhering/libvirt,agx/libvirt,jfehlig/libvirt,elmarco/libvirt,nertpinx/libvirt,taget/libvirt